Octopus reproduction is fairly uniform across species. When a female is ready to mate, she releases a chemical into the water that attracts males. They follow this chemical to the female, where they will often fight one another for the right to mate with the female. Sometimes the female will mate with more than one male. The same chemical that attracts the males stops the males from eating the female - cannibalism is common amongst octopodes.

Once it has been decided who will be mating, the male transfers packages of sperm called \"spermatophores\" to the female using his third right arm (which typically has no suckers). The female stores these, and then builds a den. She then seals the entrance. Once this is complete, she lays the eggs and ...

Only about 100 cases are documented around the world. The true human tail upon birth is caused by a lack of cell destruction of the distal end of the embryonic tail.


According to some experts, the true human tail is not really a tail at all. It is thought to be linked to spina bifida or a hiccup in the natural human development process. While others thing that it is due to mutation of the genes that produce cellular destruction of the tail component

As it is well known that it is derived from the most distal remnant of the embryonic tail. It contains adipose and connective tissue, central bundles of striated muscle, blood vessels, and nerves and is covered by skin while it lacks Bone, cartilage, notochord, and spinal cord. The true tail aris ...

Scientists at University of St Andrews in Scotland and the Institute of Scientific Instruments (ISI) in the Czech Republic have designed a minute but completely functional tractor beam.

Reminiscent of Star Trek, they use a beam of light to draw objects towards the light source on a microscopic level.

The kakapo is a strange little flightless bird native to New Zealand. Sadly there are now only 126 kakapo left in conservation areas, where they eat a range of plants. But researchers who have been studying ancient poo samples have recently found that around 900 years ago kakapo ate a lot of pollen from a root parasite known as Hades flower. The two no longer exist in the same place and Hades flower is also rare, which begs the question - were the birds responsible for pollinating it?

Further research needs to be done, but it is an interesting conservation link. ...

This is the Costa Rican variable harlequin toad (Atelopus varius), also known as the clown frog (in spite of the fact that it is a true toad). They once ranged from Costa Rica to Panama, but are now listed as critically endangered and reduced to a single population in Costa Rica. The variable harlequin toads conspicuous colouring serves as a warning to predators of the toads toxicity.

These amazing images of animals in the womb were compiled by scientists using ultrasound scans and computer graphics.